Make swallowOkAfterResend default to True, part of the fix for #166
SwallowOkAfterResend isn't repetier only anymore
Removed obsolete GcodeLoader in printer module
Preparing official "release" of a first rc to help in packaging
Merge tag 'upstream/1.0.0_rc1'

Update to version 1.0.0rc1 before making any further changes. The
release is near!
Update the changelog to indicate we're dealing with version 1.0.0rc1.
Point the Vcs of this package to github.